| A | B |
|---|
| coal | This fossil fuel is a rock made from decomposed plants. |
| petroleum | This liquid fossil fuel is found in rocks |
| natural gas | This fossil fuel is a gas made from oil. |
| nuclear | Radioactive rocks are used to make |
| Wind | This energy comes from moving air. |
| Solar | Light and heat from the sun make |
| Biomass | . This is energy from plants and animals, |
| Hydroelectric | Fast-flowing rivers and water released |
| Renewable resource | resources that can be used again and |
| Nonrenewable resource | Resources that can’t be used over and over; once they are gone, they are gone again |
| fossil fuel | an energy-rich substance formed from the remains of dead organisms |
